JPH0681749A - Installing device for fuel injection valve - Google Patents
Installing device for fuel injection valveInfo
- Publication number
- JPH0681749A JPH0681749A JP4235794A JP23579492A JPH0681749A JP H0681749 A JPH0681749 A JP H0681749A JP 4235794 A JP4235794 A JP 4235794A JP 23579492 A JP23579492 A JP 23579492A JP H0681749 A JPH0681749 A JP H0681749A
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- injection valve
- seal
- delivery pipe
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料噴射弁の取り付け
装置に関し、詳細には、エンジン燃焼室内に直接燃料を
噴射する筒内燃料噴射弁をエンジンシリンダヘッドに取
り付けるための取り付け装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for a fuel injection valve, and more particularly to a mounting device for mounting an in-cylinder fuel injection valve for injecting fuel directly into an engine combustion chamber to an engine cylinder head.
【０００２】[0002]
【従来の技術】従来、火花点火式内燃機関の燃料噴射方
法は気筒の吸気ポートに燃料を噴射するポート噴射方式
が採用されていたが、近年の排気エミッションの改善と
燃費向上の要請から、燃焼状態を改善するためにエンジ
ン燃焼室内に直接燃料を噴射する筒内燃料噴射方式が開
発された。2. Description of the Related Art Conventionally, as a fuel injection method for a spark ignition type internal combustion engine, a port injection method for injecting fuel into an intake port of a cylinder has been adopted. However, due to recent demands for improvement of exhaust emission and improvement of fuel consumption, combustion is performed. To improve the condition, an in-cylinder fuel injection system has been developed in which fuel is directly injected into the engine combustion chamber.
【０００３】筒内燃料噴射方式においては、燃料噴射弁
先端には燃焼室内の燃焼ガス圧力が直接作用し、シリン
ダヘッドから燃料噴射弁を離間させる方向に大きな力が
燃料噴射弁に加わるため、ポート噴射方式の場合に比べ
て燃料噴射弁を堅固に保持できる取り付け装置が必要と
なり、また、燃料噴射弁先端とシリンダヘッドとの間に
はエンジン燃焼室からの燃焼ガスの漏れを防ぐため、ガ
スシールを設ける必要がある。従来、上記ガスシールと
してはガスケット等の軸方向シールが用いられており、
シリンダヘッドの燃料噴射弁取り付け孔に螺条を設けて
燃料噴射弁をねじ込むか、或いは燃料噴射弁に取り付け
フランジを設けてシリンダヘッドにボルト止めすること
により燃料噴射弁をシリンダヘッドに保持すると共にガ
スケット等のシール効果を得るための軸方向力を発生さ
せていた。In the in-cylinder fuel injection system, the combustion gas pressure in the combustion chamber directly acts on the tip of the fuel injection valve, and a large force is applied to the fuel injection valve in the direction of separating the fuel injection valve from the cylinder head. A mounting device that can hold the fuel injection valve more firmly than in the case of the injection method is required, and a gas seal is provided between the tip of the fuel injection valve and the cylinder head to prevent leakage of combustion gas from the engine combustion chamber. Need to be provided. Conventionally, an axial seal such as a gasket has been used as the gas seal.
Hold the fuel injection valve on the cylinder head by attaching a thread to the fuel injection valve mounting hole of the cylinder head and screwing in the fuel injection valve, or by providing a mounting flange on the fuel injection valve and bolting to the cylinder head, and also a gasket. Axial force was generated to obtain the sealing effect.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上述のよう
にガスケット等の軸方向シールを用いた場合、充分なシ
ール効果を得るためには、シールに大きな圧縮力を加え
る必要があり、燃料噴射弁を取り付ける際の軸方向取り
付け荷重も、例えば、７００〜１０００kgf 程度の大き
な値に設定する必要があった。このため、燃料噴射弁取
り付け時の作業能率の悪化や、過大な荷重を加えたため
に燃料噴射弁内部機構の変形等を生じる等の問題があっ
た。However, when an axial seal such as a gasket is used as described above, in order to obtain a sufficient sealing effect, it is necessary to apply a large compressive force to the seal, and the fuel injection valve It is necessary to set the axial mounting load when mounting the to a large value, for example, about 700 to 1000 kgf. Therefore, there are problems that the work efficiency at the time of mounting the fuel injection valve is deteriorated and that the internal mechanism of the fuel injection valve is deformed due to the application of an excessive load.
【０００５】また、ねじ込みやフランジで燃料噴射弁を
シリンダヘッドに固定した場合、取り付け部から上の燃
料噴射弁部分は片持ち支持構造になるため、燃料噴射弁
上部にに振動を生じたり強度上好ましくない等の問題が
あった。例えば、実開平３−６０５１号公報には、複数
の燃料噴射弁を共通のリザーバタンクに連結し、このリ
ザーバタンクをシリンダヘッドに取り付けてリザーバタ
ンクを介して燃料噴射弁上部を支持することにより、上
記の片持ち支持構造による問題を回避した燃料噴射弁の
取り付け構造が記載されている。Further, when the fuel injection valve is fixed to the cylinder head by screwing or a flange, the fuel injection valve portion above the mounting portion has a cantilevered support structure, so that vibration is generated in the upper portion of the fuel injection valve and strength is increased. There were problems such as unfavorability. For example, in Japanese Utility Model Laid-Open No. 3-6051, by connecting a plurality of fuel injection valves to a common reservoir tank, attaching the reservoir tank to a cylinder head, and supporting the upper portion of the fuel injection valve via the reservoir tank, A fuel injection valve mounting structure is described which avoids the problems associated with the cantilevered support structure described above.
【０００６】しかし、上記公報の取り付け構造では、前
述の燃料噴射弁取り付け荷重による問題は解決されな
い。たとえば、ガスシールに、ガスケット等の軸方向シ
ールを使用する代わりに、大きな軸方向荷重を必要とし
ないＯリング等の径方向シールを使用すると共に、燃料
噴射弁上部を支持する支持部材を設け、該支持部材とシ
リンダヘッドとの間に燃料噴射弁を挟持する構造をとれ
ば、上記の片持ち支持構造による問題と取り付け荷重に
よる問題との両方を解決可能である。しかし、燃料噴射
弁先端には燃焼室内の周期的に変動する燃焼圧力が加わ
るため、このような取り付け構造をとると、上述の支持
部材とシリンダヘッドとの間で燃焼圧力により燃料噴射
弁が軸方向に振動を生じ、シールの損傷を生じたり、騒
音の原因となる問題が生じる。However, the mounting structure disclosed in the above publication does not solve the above-mentioned problem due to the mounting load of the fuel injection valve. For example, instead of using an axial seal such as a gasket for the gas seal, a radial seal such as an O-ring that does not require a large axial load is used, and a support member that supports the upper portion of the fuel injection valve is provided. With the structure in which the fuel injection valve is sandwiched between the support member and the cylinder head, both the problems due to the cantilever support structure and the problems due to the mounting load can be solved. However, since the combustion pressure that fluctuates periodically in the combustion chamber is applied to the tip of the fuel injection valve, such a mounting structure causes the combustion pressure between the support member and the cylinder head to cause the fuel injection valve to move axially. This causes vibrations in the direction, causing damage to the seals and causing noise.
【０００７】本発明は、上記問題を解決する燃料噴射弁
の取り付け装置を提供することを目的としている。An object of the present invention is to provide a mounting device for a fuel injection valve that solves the above problems.
【０００８】[0008]
【課題を解決するための手段】本発明によれば、エンジ
ン燃焼室内に直接燃料を噴射する筒内燃料噴射弁をエン
ジン本体に取り付けるための取り付け装置であって、エ
ンジン本体と、エンジン本体に固定されたデリバリパイ
プとの間に燃料噴射弁を挟持し、エンジン燃焼室と燃料
噴射弁先端との間、及びデリバリパイプと燃料噴射弁後
端との間をそれぞれ径方向シールでシールすると共に、
エンジン燃焼室内の燃焼圧力によって前記燃料噴射弁先
端に加わる力より、デリバリパイプ内の燃料圧力によっ
て前記燃料噴射弁後端に加わる力の方が大きくなるよう
に前記それぞれの径方向シールのシール径を設定したこ
とを特徴とする燃料噴射弁の取り付け装置が提供され
る。According to the present invention, there is provided a mounting device for mounting an in-cylinder fuel injection valve for directly injecting fuel into an engine combustion chamber, the mounting device being fixed to the engine body and the engine body. The fuel injection valve is sandwiched between the delivered delivery pipe and the engine combustion chamber and the front end of the fuel injection valve, and the delivery pipe and the rear end of the fuel injection valve are sealed with radial seals, respectively,
The seal diameter of each radial seal is set so that the force applied to the rear end of the fuel injection valve by the fuel pressure in the delivery pipe is larger than the force applied to the tip of the fuel injection valve by the combustion pressure in the engine combustion chamber. There is provided a mounting device for a fuel injection valve characterized by being set.
【０００９】[0009]
【作用】燃料噴射弁後端に作用するデリバリパイプ内の
燃料圧力により、燃料噴射弁には、燃焼圧力の変動にか
かわらず常に燃料噴射弁をシリンダヘッドに押圧する軸
力が加わっているため、燃料噴射弁はシリンダヘッド側
に固定され振動を生じない。[Operation] Due to the fuel pressure in the delivery pipe acting on the rear end of the fuel injection valve, the fuel injection valve is always applied with the axial force for pressing the fuel injection valve against the cylinder head regardless of the fluctuation of the combustion pressure. The fuel injection valve is fixed to the cylinder head side and does not generate vibration.
【００１０】[0010]
【実施例】以下、添付図面を参照して本発明の実施例を
説明する。図３は、本発明の燃料噴射弁取り付け装置の
概略を示す図である。図において、１はエンジンのシリ
ンダヘッド、３はシリンダ燃焼室内に直接燃料を噴射す
る筒内燃料噴射弁、２はデリバリパイプ（又はコモンレ
ール）を示す。デリバリパイプ２は、図示しない燃料噴
射ポンプから供給配管を通じて供給された高圧の燃料を
各シリンダの燃料噴射弁に分配する役割を果たす。従
来、デリバリパイプは燃料噴射弁から離してシリンダヘ
ッドに直接固定し、デリバリパイプと各燃料噴射弁との
間を高圧用のチュービングで個別に接続して各燃料噴射
弁に燃料を分配するのが通常であったが、本実施例で
は、各燃料噴射弁をデリバリパイプに直接接続してお
り、燃料分配用のチュービングは設けていない。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 3 is a diagram showing an outline of the fuel injection valve attachment device of the present invention. In the figure, 1 is a cylinder head of an engine, 3 is an in-cylinder fuel injection valve for directly injecting fuel into a cylinder combustion chamber, and 2 is a delivery pipe (or a common rail). The delivery pipe 2 plays a role of distributing high-pressure fuel supplied from a fuel injection pump (not shown) through a supply pipe to the fuel injection valve of each cylinder. Conventionally, the delivery pipe is separated from the fuel injection valve and directly fixed to the cylinder head, and the delivery pipe and each fuel injection valve are individually connected by high-pressure tubing to distribute the fuel to each fuel injection valve. As usual, in this embodiment, each fuel injection valve is directly connected to the delivery pipe, and no tubing for fuel distribution is provided.
【００１１】図２は、デリバリパイプ２のシリンダヘッ
ド１への取り付け部分を示す図３のII-II 線に沿った断
面図である。図２に示すように、デリバリパイプ２は、
ベークライト等の断熱材からなるスペーサ４を挟んでデ
リバリセットボルト５によりシリンダヘッド１に堅固に
固定されている。一方、燃料噴射弁３は、シリンダヘッ
ド１とデリバリパイプ２とのあいだに挟持されており、
従来のようなねじ込み式やフランジ式の取り付け部を備
えていない。図３に６と７で示すのは、それぞれデリバ
リパイプ２とシリンダヘッド１とに設けられた燃料噴射
弁の接続口である。接続口６はデリバリパイプ２内の燃
料通路８に連通し、接続口７はシリンダヘッド１内の燃
焼室９に連通しており、燃料噴射弁３は先端を接続口７
に、後端を接続口６にそれぞれ挿入してデリバリパイプ
２とシリンダヘッド１とに取り付けられている。FIG. 2 is a sectional view taken along the line II-II in FIG. 3 showing a portion where the delivery pipe 2 is attached to the cylinder head 1. As shown in FIG. 2, the delivery pipe 2 is
It is firmly fixed to the cylinder head 1 by a delivery reset bolt 5 with a spacer 4 made of a heat insulating material such as bakelite being sandwiched therebetween. On the other hand, the fuel injection valve 3 is sandwiched between the cylinder head 1 and the delivery pipe 2,
It does not have a conventional screw-type or flange-type mounting part. Reference numerals 6 and 7 in FIG. 3 denote connection ports of the fuel injection valves provided in the delivery pipe 2 and the cylinder head 1, respectively. The connection port 6 communicates with a fuel passage 8 in the delivery pipe 2, the connection port 7 communicates with a combustion chamber 9 in the cylinder head 1, and the tip of the fuel injection valve 3 has a connection port 7.
The rear end is inserted into the connection port 6 and attached to the delivery pipe 2 and the cylinder head 1.
【００１２】次に、図１は燃料噴射弁３とデリバリパイ
プ２およびシリンダヘッド１との取り付け部分を示す図
３のI-I 線に沿った断面図である。前述のように、燃料
噴射弁３の先端はシリンダヘッド１の接続口７に挿入さ
れ、接続口７のリテーナ部１０に当接している。また、
本実施例では燃料噴射弁３の先端部とシリンダヘッド１
との間のガスシール２１には、耐熱製Ｏリング等の径方
向シールが用いられている。径方向シールは、その外周
面でシールを行うものであり、取り付け時に大きな予圧
縮荷重を必要としない。Next, FIG. 1 is a sectional view taken along line II in FIG. 3 showing a mounting portion of the fuel injection valve 3, the delivery pipe 2 and the cylinder head 1. As described above, the tip of the fuel injection valve 3 is inserted into the connection port 7 of the cylinder head 1 and is in contact with the retainer portion 10 of the connection port 7. Also,
In this embodiment, the tip of the fuel injection valve 3 and the cylinder head 1
A radial seal such as a heat-resistant O-ring is used as the gas seal 21 between and. The radial seal seals on the outer peripheral surface thereof, and does not require a large precompression load during mounting.
【００１３】また、燃料噴射弁３の後端は、デリバリパ
イプ２の接続口６に挿入されて燃料通路８に接続されて
いる。燃料噴射弁３後端部周囲には、燃料シール２２が
設けられており、高圧燃料のもれを防止している。燃料
シール２２には耐油性のＯリング等の径方向シールが用
いられている。図に２３で示すのは、デリバリパイプ２
と燃料噴射弁３との間に介挿されたセット用シールであ
る。The rear end of the fuel injection valve 3 is inserted into the connection port 6 of the delivery pipe 2 and connected to the fuel passage 8. A fuel seal 22 is provided around the rear end of the fuel injection valve 3 to prevent leakage of high-pressure fuel. As the fuel seal 22, a radial seal such as an oil resistant O-ring is used. In FIG. 23, the delivery pipe 2 is shown.
Is a set seal inserted between the fuel injection valve 3 and the fuel injection valve 3.
【００１４】セット用シール２３は、弾性材料からなる
軸方向シールであり、燃料噴射弁の軸線に垂直な面でシ
ールを行う。セット用シール２３は、デリバリパイプ２
と燃料噴射弁３との間に圧縮状態で取り付けられ、燃料
噴射弁３をシリンダヘッド１に向けて押圧し、燃料噴射
弁３をデリバリパイプ２とシリンダヘッド１との間に挟
持する際に、スペーサ４の厚さのばらつきによりガタが
生じたり、運転時の熱膨張により燃料噴射弁３に過大な
応力が生じることを防止している。又、セット用シール
２３は、燃料シール２２の保護のためのダストシール、
及び燃料シール２２からの燃料油のにじみが外部に漏れ
ることを防ぐサブシールとしても機能する。The set seal 23 is an axial seal made of an elastic material, and seals on a surface perpendicular to the axis of the fuel injection valve. The set seal 23 is the delivery pipe 2
And the fuel injection valve 3 in a compressed state, the fuel injection valve 3 is pressed toward the cylinder head 1, and the fuel injection valve 3 is sandwiched between the delivery pipe 2 and the cylinder head 1. This prevents looseness due to variations in the thickness of the spacer 4 and excessive stress in the fuel injection valve 3 due to thermal expansion during operation. The set seal 23 is a dust seal for protecting the fuel seal 22,
It also functions as a sub-seal that prevents the bleeding of fuel oil from the fuel seal 22 from leaking to the outside.
【００１５】図３に１１で示すのは、燃料噴射弁の燃料
噴射口位置決め用と燃料噴射弁の回転防止用とを兼ねた
位置決めピン、１２で示すのは、燃料噴射弁への電気コ
ネクタである。前述のように、本実施例ではデリバリパ
イプ２とシリンダヘッド１との間に燃料噴射弁３を挟持
しているのみであり、ねじ込みやフランジ等により軸方
向の押圧力を発生させていない。このため、運転中燃焼
室内の燃焼ガス圧力が燃料噴射弁先端に加わると、燃料
噴射弁をシリンダヘッドから離間させる方向の力が生
じ、燃料噴射弁がデリバリパイプとシリンダヘッドとの
間で微小振動を起こし、径方向シールの損傷や、騒音の
原因となる恐れがある。Reference numeral 11 in FIG. 3 is a positioning pin for positioning the fuel injection port of the fuel injection valve and for preventing rotation of the fuel injection valve, and 12 is an electrical connector to the fuel injection valve. is there. As described above, in the present embodiment, the fuel injection valve 3 is only sandwiched between the delivery pipe 2 and the cylinder head 1, and axial pressing force is not generated by screwing or a flange. For this reason, when the combustion gas pressure in the combustion chamber is applied to the tip of the fuel injection valve during operation, a force is generated in the direction of separating the fuel injection valve from the cylinder head, causing the fuel injection valve to vibrate slightly between the delivery pipe and the cylinder head. May cause damage to the radial seal or cause noise.
【００１６】そこで本実施例では、デリバリパイプ２内
の燃料圧力を利用して燃料噴射弁３を常にシリンダヘッ
ド１に押圧固定し、上記微小振動の発生を防止してい
る。今、デリバリパイプ２内の燃料圧力により燃料噴射
弁３後端に加わるシリンダヘッド方向の押圧力Ｆ1 はデ
リバリパイプ２内の燃料圧力をＰf とすると、Ｆ1＝Ｐ
f ×Ｓf となる。ここで、Ｓf は燃料噴射弁後端の燃料
圧力を受ける部分の面積、すなわち燃料シール２２のシ
ール面で囲まれる面積であり、燃料シール２２のシール
径によって決まる値である。Therefore, in the present embodiment, the fuel pressure in the delivery pipe 2 is utilized to constantly press and fix the fuel injection valve 3 to the cylinder head 1 to prevent the above-mentioned minute vibration from occurring. Now, if the fuel pressure in the delivery pipe 2 is P f , the pressing force F 1 in the cylinder head direction applied to the rear end of the fuel injection valve 3 by the fuel pressure in the delivery pipe 2 is F 1 = P
f × S f . Here, S f is the area of the portion of the rear end of the fuel injection valve that receives the fuel pressure, that is, the area surrounded by the sealing surface of the fuel seal 22, and is a value determined by the seal diameter of the fuel seal 22.
【００１７】又、燃焼室内の燃焼圧力により燃料噴射弁
３先端に加わるシリンダヘッドから離間する方向への押
圧力Ｆ2 は燃焼室内の燃焼圧力をＰc とすると、Ｆ2 ＝
Ｐc×Ｓc となる。ここで、Ｓc は燃料噴射弁先端の燃
焼圧力を受ける部分の面積、すなわちガスシール２１の
シール面で囲まれる面積であり、ガスシール２１のシー
ル径によって決まる値である。Further, the pressing force F 2 applied to the tip of the fuel injection valve 3 in the direction away from the cylinder head by the combustion pressure in the combustion chamber is F 2 =, where P c is the combustion pressure in the combustion chamber.
It becomes P c × S c . Here, S c is the area of the portion of the tip of the fuel injection valve that receives the combustion pressure, that is, the area surrounded by the sealing surface of the gas seal 21, and is a value determined by the seal diameter of the gas seal 21.
【００１８】ここで、燃料圧力Ｐf は略一定であるが、
燃焼圧力Ｐc は大きく変動する。しかし、上記燃焼圧力
の最大値Ｐcmaxを用いてＦ2 を計算し、Ｆ1 ＞Ｆ2 とな
るように燃料シール２２とガスシール２１のシール面積
Ｓf とＳC 、すなわち燃料シール２２とガスシール２１
のシール径とを設定すれば、燃焼圧力が変動しても常に
Ｆ1 ＞Ｆ2 とすることができ、燃焼圧力が変動しても燃
料噴射弁は常にシリンダヘッド側に押圧されることにな
る。このため、運転中燃焼圧力により燃料噴射弁が動く
ことがないので、前述の微小振動による問題が生じな
い。Here, the fuel pressure P f is substantially constant,
The combustion pressure P c fluctuates greatly. However, F 2 is calculated using the maximum value P cmax of the combustion pressure, and the seal areas S f and S C of the fuel seal 22 and the gas seal 21 are set so that F 1 > F 2 , that is, the fuel seal 22 and the gas. Seal 21
The seal diameter can be set so that F 1 > F 2 is always maintained even if the combustion pressure fluctuates, and the fuel injection valve is always pressed toward the cylinder head side even if the combustion pressure fluctuates. . Therefore, since the fuel injection valve does not move due to the combustion pressure during operation, the above-mentioned problem due to microvibration does not occur.
【００１９】又、ガスシール２１に径方向シールを使用
しているため、上記のシリンダヘッド方向への押圧力Ｆ
1 は軸方向シールを使用した場合に較べて大幅に低減す
る事が出来る（例えば、軸方向シールの場合７００kgf
以上の押圧力を必要とするのに対し、径方向シールの場
合は５０kgf 程度の押圧力で足りる）。このため、取り
付けの際に作業能率が悪化したり、燃料噴射弁に過大な
力が加わり内部機構の変形を生じる等の問題がない。Further, since the radial seal is used as the gas seal 21, the pressing force F toward the cylinder head is applied.
1 can be greatly reduced compared to the case where an axial seal is used (for example, 700 kgf for an axial seal).
While the above pressing force is required, a pressing force of about 50 kgf is sufficient for the radial seal). Therefore, there is no problem that the work efficiency is deteriorated at the time of mounting, the excessive force is applied to the fuel injection valve, and the internal mechanism is deformed.
【００２０】更に、本実施例では、デリバリパイプに直
接燃料噴射弁を接続するようにして従来使用されていた
燃料分配用のチュービングを廃止したため、燃料噴射に
伴う燃料圧力の脈動による騒音が剛性の高いデリバリパ
イプにより減衰され、外部に放射される騒音が低減され
る効果も得られる。Further, in this embodiment, the fuel distribution valve tubing which has been conventionally used is abolished by connecting the fuel injection valve directly to the delivery pipe. The high delivery pipe attenuates the noise radiated to the outside.
【００２１】[0021]
【発明の効果】本発明は、上述のように構成したことに
より、径方向シールを使用してシリンダヘッドとデリバ
リパイプとの間に筒内燃料噴射弁を挟持する場合の、燃
料噴射弁の微小振動の問題を解決することが出来る。As described above, according to the present invention, when the radial direction seal is used to sandwich the in-cylinder fuel injection valve between the cylinder head and the delivery pipe, the present invention has a small amount of fuel injection valve. Vibration problems can be solved.
【図１】燃料噴射弁とデリバリパイプおよびシリンダヘ
ッドとの取り付け部分を示す図３のI-I 線に沿った断面
図である。FIG. 1 is a sectional view taken along line II in FIG. 3 showing a mounting portion of a fuel injection valve, a delivery pipe, and a cylinder head.
【図２】図３のII-II 線に沿った断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】本発明の燃料噴射弁取り付け装置の概略を示す
図である。FIG. 3 is a diagram showing an outline of a fuel injection valve attachment device of the present invention.
１…シリンダヘッド ２…デリバリパイプ ３…筒内燃料噴射弁 ４…スペーサ ５…デリバリセットボルト ６，７…接続口 ８…燃料通路 １１…位置決めピン ２１…ガスシール ２２…燃料シール ２３…セット用シール 1 ... Cylinder head 2 ... Delivery pipe 3 ... In-cylinder fuel injection valve 4 ... Spacer 5 ... Delivery reset bolt 6, 7 ... Connection port 8 ... Fuel passage 11 ... Positioning pin 21 ... Gas seal 22 ... Fuel seal 23 ... Set seal
Claims (1)
筒内燃料噴射弁をエンジン本体に取り付けるための取り
付け装置であって、エンジン本体と、エンジン本体に固
定されたデリバリパイプとの間に燃料噴射弁を挟持し、
エンジン燃焼室と燃料噴射弁先端との間、及びデリバリ
パイプと燃料噴射弁後端との間をそれぞれ径方向シール
でシールすると共に、エンジン燃焼室内の燃焼圧力によ
って前記燃料噴射弁先端に加わる力より、デリバリパイ
プ内の燃料圧力によって前記燃料噴射弁後端に加わる力
の方が大きくなるように前記それぞれの径方向シールの
シール径を設定したことを特徴とする燃料噴射弁の取り
付け装置。1. An attachment device for attaching an in-cylinder fuel injection valve for injecting fuel directly into an engine combustion chamber to an engine body, the fuel injection being provided between the engine body and a delivery pipe fixed to the engine body. Sandwich the valve,
A radial seal is provided between the engine combustion chamber and the tip of the fuel injection valve, and between the delivery pipe and the rear end of the fuel injection valve. A mounting device for a fuel injection valve, wherein a seal diameter of each of the radial seals is set so that a force applied to a rear end of the fuel injection valve is increased by a fuel pressure in a delivery pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04235794A JP3134531B2 (en) | 1992-09-03 | 1992-09-03 | Fuel injector mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04235794A JP3134531B2 (en) | 1992-09-03 | 1992-09-03 | Fuel injector mounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0681749A true JPH0681749A (en) | 1994-03-22 |
| JP3134531B2 JP3134531B2 (en) | 2001-02-13 |
Family
ID=16991364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04235794A Expired - Lifetime JP3134531B2 (en) | 1992-09-03 | 1992-09-03 | Fuel injector mounting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3134531B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0931672A1 (en) | 1998-01-06 | 1999-07-28 | Brother Kogyo Kabushiki Kaisha | Ink ribbon cartridge |
| US6073612A (en) * | 1998-06-11 | 2000-06-13 | Toyota Jidosha Kabushiki Kaisha | Delivery pipe for an internal combustion engine |
| EP1138507A2 (en) | 2000-03-31 | 2001-10-04 | Brother Kogyo Kabushiki Kaisha | Ink sheet cartridge and exchangeable ink-sheet set mounted on the ink sheet cartridge |
| JP2003314406A (en) * | 2002-04-19 | 2003-11-06 | Yamaha Marine Co Ltd | Fuel supply rail mounting structure for two cycle multi- cylinder engine |
| JP2007182798A (en) * | 2006-01-06 | 2007-07-19 | Sanoh Industrial Co Ltd | Mounting structure for fuel injection nozzle |
| WO2018179217A1 (en) * | 2017-03-30 | 2018-10-04 | 本田技研工業株式会社 | Fuel supply device for internal combustion engine |
| WO2022009471A1 (en) * | 2020-07-07 | 2022-01-13 | 株式会社クボタ | Engine head structure |
| JP2022014757A (en) * | 2020-07-07 | 2022-01-20 | 株式会社クボタ | Engine head structure |
| WO2022270005A1 (en) * | 2021-06-21 | 2022-12-29 | 株式会社クボタ | Fuel injection system |
| JP2023001805A (en) * | 2021-06-21 | 2023-01-06 | 株式会社クボタ | fuel injection system |
| JP2023001808A (en) * | 2021-06-21 | 2023-01-06 | 株式会社クボタ | fuel injection system |
-
1992
- 1992-09-03 JP JP04235794A patent/JP3134531B2/en not_active Expired - Lifetime
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0931672A1 (en) | 1998-01-06 | 1999-07-28 | Brother Kogyo Kabushiki Kaisha | Ink ribbon cartridge |
| EP1000765A2 (en) | 1998-01-06 | 2000-05-17 | Brother Kogyo Kabushiki Kaisha | Ink ribbon cartridge |
| US6257780B1 (en) | 1998-01-06 | 2001-07-10 | Brother Kogyo Kabushiki Kaisha | Ink ribbon cartridge having one undetachable spool and idle rotation preventing structure |
| US6073612A (en) * | 1998-06-11 | 2000-06-13 | Toyota Jidosha Kabushiki Kaisha | Delivery pipe for an internal combustion engine |
| EP0964151A3 (en) * | 1998-06-11 | 2003-01-29 | Toyota Jidosha Kabushiki Kaisha | Fuel delivery pipe for an internal combustion engine |
| EP1138507A2 (en) | 2000-03-31 | 2001-10-04 | Brother Kogyo Kabushiki Kaisha | Ink sheet cartridge and exchangeable ink-sheet set mounted on the ink sheet cartridge |
| EP1182043A2 (en) | 2000-03-31 | 2002-02-27 | Brother Kogyo Kabushiki Kaisha | Ink sheet cartridge and exchangeable ink-sheet set mounted on the ink sheet cartridge |
| US6595710B2 (en) | 2000-03-31 | 2003-07-22 | Brother Kogyo Kabushiki Kaisha | Image forming device and ink sheet cartridge mounted on the image forming device |
| US7367727B2 (en) | 2000-03-31 | 2008-05-06 | Brother Kogyo Kabushiki Kaisha | Ink sheet cartridge having paper guide |
| US7758263B2 (en) | 2000-03-31 | 2010-07-20 | Brother Kogyo Kabushiki Kaisha | Ink ribbon cartridge having projections extending from connecting members |
| JP2003314406A (en) * | 2002-04-19 | 2003-11-06 | Yamaha Marine Co Ltd | Fuel supply rail mounting structure for two cycle multi- cylinder engine |
| JP2007182798A (en) * | 2006-01-06 | 2007-07-19 | Sanoh Industrial Co Ltd | Mounting structure for fuel injection nozzle |
| WO2018179217A1 (en) * | 2017-03-30 | 2018-10-04 | 本田技研工業株式会社 | Fuel supply device for internal combustion engine |
| JPWO2018179217A1 (en) * | 2017-03-30 | 2019-11-07 | 本田技研工業株式会社 | Fuel supply device for internal combustion engine |
| CN110506157A (en) * | 2017-03-30 | 2019-11-26 | 本田技研工业株式会社 | The fuel supply system of internal combustion engine |
| US10871137B2 (en) | 2017-03-30 | 2020-12-22 | Honda Motor Co., Ltd. | Fuel supply device for internal combustion engine |
| CN110506157B (en) * | 2017-03-30 | 2021-08-20 | 本田技研工业株式会社 | Fuel supply device for internal combustion engine |
| WO2022009471A1 (en) * | 2020-07-07 | 2022-01-13 | 株式会社クボタ | Engine head structure |
| JP2022014757A (en) * | 2020-07-07 | 2022-01-20 | 株式会社クボタ | Engine head structure |
| JP2022014756A (en) * | 2020-07-07 | 2022-01-20 | 株式会社クボタ | Engine head structure |
| US11781501B2 (en) | 2020-07-07 | 2023-10-10 | Kubota Corporation | Engine head structure |
| WO2022270005A1 (en) * | 2021-06-21 | 2022-12-29 | 株式会社クボタ | Fuel injection system |
| JP2023001805A (en) * | 2021-06-21 | 2023-01-06 | 株式会社クボタ | fuel injection system |
| JP2023001808A (en) * | 2021-06-21 | 2023-01-06 | 株式会社クボタ | fuel injection system |
Also Published As
| Publication number | Publication date |
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| JP3134531B2 (en) | 2001-02-13 |
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